A wise ruler ought never to keep faith when by doing so it would be against his interests.
Niccolo MachiavelliWar is just when it is necessary; arms are permissible when there is no hope except in arms.
Niccolo MachiavelliBecause just as good morals, if they are to be maintained, have need of the laws, so the laws, if they are to be observed, have need of good morals.
Niccolo MachiavelliIt is a true observation of ancient writers, that as men are apt to be cast down by adversity, so they, are easily satiated with prosperity, and that joy and grief produce the same effects. For whenever men are not obliged by necessity to fight they fight from ambition, which is so powerful a passion in the human breast that however high we reach we are never satisfied.
Niccolo Machiavelli